Drawing-board, printing-frame, and the like.



T. 0111111, 111. DRAWING BOARD, PRINTING FRAME, AND THE LIKE.

APPLIGATION FILED AUG 27, 1909.

Patented July 4, 1911.

2 SHEETS-SHEET 1.

T. CURE, JR, DRAWING BOARD, PRINTING FRAME, AND THE LIKE.

APPLIOATION FILED AUG. 27, 1909.

Patented July 4, 1911.

2 SHEETS-SHEET 2.

Wi zesses: i g 2} UNTTED STATES PATEN T @FFTCE.

THOMAS CURE, JR., 0F AIRDRIE, SCOTLAND, ASSIGNOR OF ONE-HALF T0 JOHNMAGLEAN, OFAIRDRIE, SCOTLAND.

DRAWING-BOARD, PRINTING-FRAME, AND THE LIKE.

Specification of Letters Patent.

Application filed August 27, 1909.

Patented July 4, 1911'. Serial No. 514,871.

To all whom it may concern:

Be it known that I, THOMAS CURE, Jr., a subject of the King of GreatBritain, residing at Airdrie, Lanarkshire, Scotland, have inventedcertain new and useful Improvements in Drawing-Boards, Printing- Frames,and the Like, of which the following is a specification.

This invention relates to an improved drawing-board in which the use ofdrawmg pins or paste for securing the paper, tracingcloth, or otherdrawing material to the board is dispensed with; my invention bemgequally applicable to printing frames, sketching boards, or the like.Under th1s invention hinged clamping means are provided at one side ofthe drawing-board whereby one end of the paper or other material may besecured and a roller or rollers is, or are, provided at the oppositeside of the board upon which the paper or other material may be wound,and whereby it may be stretched upon the board.

In carrying out my invention with regard to drawing-boards I provide atone side of the drawing-board a piece of wood or other material which isadapted to fit close up to the edge of the drawing-board and to have itstop surface flush therewith. The side piece is preferably secured to theboard by means of strips of wood or metal upon the top and bottom edgesto which it is hinged. The hinges may be' of any convenient form, andthe adjacent edges of the drawing-board and side piece may be coveredwith sand paper or otherwise roughened in order to obtain a better gripupon the drawing material. At the opposite side of the drawing-board andcarried in slotted hearings in extensions of the top and bottom strips Iprovide one or more rollers upon which the drawing'material maybe wound,and whereby it may be stretched upon the drawing-board. Each roller issplit diametrically and for the greater part of its length, one halfhaving quadrantshaped projections adapted to fit into correspondingrecesses in the other half and the end of the paper being securedbetween the two halves before the latter are fitted together. The twohalves of the roller may be further secured together, if desired, bymeans of a slidable pin or in any other convenient manner, and eachroller is provided with a milled end or ends whereby the rollers may berotated. A screw and wingnut or other clamping means is also providedupon the spindle at one end of each roller whereby the roller may betightened in its bearings and prevented from rotation after the paperhas been stretched upon the board. The outer edge of the side piece isformed perfectly true and square for use with the ordinary tee-squareand is adapted to form the left-hand edge of the drawingboard. Thehinges being formed flush with the face of the board no obstruction isoffered to the tee-square and a perfectly true surface is obtained.

In order that my invention may be clearly understood I have hereuntoappended eX- planatory drawings Whereon I have shown my invention asapplied to drawing boards and printing frames.

On the drawings :Figure 1 is a side elevation of a drawing-board as madeunder my invention. Fig. 2 is an inverted plan view of Fig. 1. Figs. 3,4L and 5 are detail views of one of the rollers, Fig. 3 being a sideview of one of the interlocking parts of the roller and Fig. 4: being aside view of the other interlocking part. Fig. 5 is a cross-section onthe line X-X of Fig. 3. Fig. 6 is a side elevation of a printing frameas made under my inven tion. Fig. 7 is an inverted plan view of Fig. 6.Fig. 8 is a side elevation of a modification of Fig. 1, and Fig. 9 is aninverted plan view of Fig. 8.

On the drawing the same reference letters wherever repeated indicate thesame or similar parts.

The drawing-board a is provided at one end a with clamping means whichconsists of a piece of wood or other material 5 adapted to fit close upto the edge of the board a and to have its top surface 6 flush with thetop surface a of the board a. The edge a of the board a is beveled andthe edge 6 of the clamping piece 6 is correspondingly beveled theseedges a and b being covered with sand paper or otherwise roughened.

The clamping piece 6 is secured to the board a by means of metal orother strips 0 and 0 upon the top and bottom edges respectively. Thesestrips 0 and o are hinged to strips (Z and d secured to the top andbottom edges of the board and projecting strips e and f are provided onthe underside of the board and made with a screwed hole 6 and a hole orslot f the screwed hole e being immediately underneath a correspondinglyscrewed hole 9 provided in a projecting part 0 of the strip 0 the slot fbeing immediately underneath a screwed hole It provided in the undersideof the clamping piece 6, the arrangement being such that the edge 6 ofthe clamping piece 6 can by means of screw studs 71 and j be pulled hardover against the edge a of the board a and the paper or other materialfirmly and securely gripped therebetween. The screw studs i and 7' willretain the clamping piece 6 hard against the edge of the board until itis desired to release the paper or other material. When it is desired todo this the screw studs 71 and j are withdrawn and the clamping pieceswung up on its hinges so that the edges a and Z2 are moved apart andthe paper or other material thereby released.

Beneath the board a and in proximity to the beveled edges a roller u maybe fitted, this roller being carried in slotted bearings a and at theopposite side of the drawingboard a and carried in slotted bearings l inmetal or other extension strips m is a roller 1% upon which the drawingpaper or other material may be wound and from which it is unwound on toand stretched upon the board the paper being wound at the other side ofthe board upon the roller u. If desired there may be two or other numberof rollers n so that in addition to carrying a roll of paper a roll oftracing cloth or tracing paper or both might also be provided for. Oneadditional roller n is shown in Figs. 1 and 2. Each of the rollers n andu is split diametrically for the greater part of its length one half ahaving quadrantshaped projections n adapted to fit into recesses n inthe other half a as shown in Figs 3 and 4 and the paper or othermaterial secured between the two halves. The two halves n and n of theroller n when fitted together are secured together by means of aslidable pin 0 in the half 7:) which is adapted to slide into a slot orgroove p in the half 01?. Each roller is provided with means whereby itmay be rotated and while I have shown notched wheels g in the drawingsfor this purpose it is to be understood that I may employ other means.Screwed parts r are provided at one or both ends of the roller spindle rand a wing.

nut s or other clamping means is provided by means of which the rollermay be secured from turning.

In Figs. 6 and 7 I have shown my invention in one embodiment as adaptedfor printing frames. The means for carrying, stretching and securing thepaper or other material are practically identical with the meansprovided for drawing-boards and it is not necessary to again describethe same.

The printing frame is preferably provided with a glass sheet t againstwhich by means of the well known spring and bar arrangement the negativeand the sensitized material to be printed on and which is being fed fromthe rollers 71., is pressed so that it may be printed and then cut OH orpassed to another roller u which may be provided underneath the frame.

The arrangement for either drawing- -boards or printing frames is agreat improvement on the present methods of securing paper' or othermaterial on or in the same and besides, in the case of drawingboardsowing to the complete absence of pin holes the invention greatlyincreases the life of the board the further advantage being obtained ofa great saving in the draftsmans time.

Having now fully described my invention what I claim and desire tosecure by Letters Patent is 1. A drawing or printing board or framecomprising, in combination, a board or frame having a beveled edge atone end thereof, a strip having a correspondingly beveled edge andhinged at said end of the board or frame to the lateral. edges thereof,a roller mounted at the other end of said board or frame, and means forbringing said beveled edges together, said means comprising twoprojections on the underside of said board or frame, a lug on saidstrip, a screwed stud passing through one of said projections andthrough said lug and a second screwed stud passing through the other ofsaid projections and screwing into said strip.

2. A drawing or printing board or frame comprising, in combination, aboard or frame having a beveled edge at one end thereof, a strip havinga correspondingly beveled edge and hinged at said end of the board orframe to the lateral edges thereof, a roller mounted beneath the boardor frame and in proximity to said beveled edges, rollers mounted at theother end of said board or frame, and means for bringing said bevelededges together, said means comprising two projections on the undersideof said board or frame, a lug on said strip, a screwed stud passingthrough one of said projections and through said lug and a secondscrewed stud passing through the other of said projections and screwinginto said strip.

3. A drawing or printing board or frame comprising, in combination, aboard or frame having a beveled edge at one end thereof, a strip havinga correspondingly beveled edge and hinged at said end of the board orframe to the lateral edges thereof, means for bringing said bevelededges together, slotted bearings at the other end of said board orframe, rollers removably fitted in the slotted bearings, said rollersbeing diametrically split, and one half of each roller havingquadrant-shaped projections adapted to fit into corresponding recessesin the other half.

4. A drawing or printing board or frame comprising, in combination, aboard or frame having a beveled edge at one end thereof, a strip havinga correspondingly beveled edge and hinged at said end of the board orframe to the lateral edges thereof, means for bringing said bevelededges together, slotted bearings at the other end of said board orframe, rollers remov'ably fitted in the slotted bearings, screwed outerends on said rollers and nuts thereon for clamping said rollers inposition, said rollers being diametrically split and one half of eachroller having quadrant-shaped projections adapted to fit intocorresponding recesses in the other half.

5. The combination, with a drawing or printing board or frame having acentral opening therein and a beveled edge at one end thereof, of astrip having a correspondingly beveled edge and hinged at said end ofthe board or frame to the lateral edges thereof, means for bringing saidbeveled edges together, a roller mounted beneath the board or frame andin proximity to said beveled edges, rollers mounted at the other end ofsaid board or frame, a sheet of glass over said central opening, andspring means removably secured to the board and adapted to press againstthe glass.

In testimony whereof I afiix my signature in presence of two witnesses.

THOMAS CURB, JR.

Witnesses:

H. D. FITZPATRICK, GEO. WOLFE BRUCE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, I). C.

